Display screen or portion thereof with icon



FIG. 1 is a view of a display screen or portion thereof with icon; and,

FIG. 2 is a view of another embodiment of a display screen or portion thereof with icon, wherein the broken lines surrounding the icon depict a display screen or portion thereof on which the icon is presented. Other broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 